Safety casement sash upper lock



NGV. l2, 1940. w. B, LANG SAFETY CASEMENT -sAsH UPPER LOCK Filed Feb. 14, 1940 3 Sheets-Sheet 1 SLM Nov. l2, 1940. w B, LANG 2,221,712

` SAFETY CASEMENT sAsH UPPER Loox Filed Feb. 14, 1940 3 Sheets-Sheet 2 Nov. l2, 1940. w, Q LANG 2,221,712

SAFETY CASEMNT SASH UPPER LOCK Filed Feb. 14, 1940 3 Sheets-Sheet 3 Patented ov. 112, 1940 UNITED STATES PATENT OFFICE 8 Claims.

This inventionrelates to closure fasteners and more particularly to a lock or fastener for use in connection with the sashes of casement Windows.

An object of this invention is to provide a closure fastener of this character which is adapted to lock the upper portion of a sash -so as to prevent unauthorized opening of the window from the outside and to hold the sash tightly against the window frame irrespective of whether the sash is warped or straight.

A further object of this invention is to provide a closure fastener of this character which' is adapted to be used as a supplement to the present holding means for holding the Casement window in either open or closed position.

A still further object 'of this invention is to provide a closure fastener which is simple in construction and arrangement, strong, durable, compact, simple to install relative to the window, thoroughly efficientin its use, and conveniently operated to lock or release the sash in addition to being inexpensive to manufacture.

A further object of this inventionis to provide a closure fastener for a easement sash which is adapted to be interposed betweenthe sash and an inside screen which is provided with operating means extending through the screen frame sothat the lock or fastener may be operated without removal of the screen frame.

A further object of this invention is to provide a structure of this kind wherein the operating means for the fastener is mounted on the screen frame so that the screen frame may be readily removed from the window frame, the operating means being of a removable or detachable character.

Embodying the aims aforesaid and others which may hereinafter appear, my invention consists of the novel construction, combination and arrange' ment of parts, as will be more specifically described and illustrated in the accompanying drawings, wherein areshown embodiments of my invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawings:

Figure 1 is a fragmentary front elevation partly in section of a closure fastener constructed according to an embodiment of this invention,

Figure. 2 is an enlarged fragmentary sectional view taken on the line 2-2 of Figure 1,

l Figure 3 is a sectional view taken on the line 3-3 of Figure 2,

Figure 4 is a sectional view taken on the line 4-4 of Figure 3,

Figure 5 is a sectional view taken on the line 5-5 of Figure 1,

Figure 6 is a fragmentary rear elevation of the screen frame structure having a modified form of operator for the closure fastener disclosed in Figures 1 to 5, inclusive,

Figure 7 is a detail side elevation partly in section of the operator shown in Figure 6,

Figure 8 is a fragmentary plan view of the operating shaft for this device before it is cut off to the desired length to t the particular window and screen structure,

Figure 9 is a fragmentary View from the outside of a. double easement window having a single locking device secured thereto, and

l Figure 10 is a sectional view taken on the line IU--I of Figure 9.

Referring to the drawings, numeral IIJ designates generally a window frame structure which is provided with a stop II against which a casement sash I2 is adapted to engage. The sash I2 isvhinged at one edge to the frame structure I0 and is releasably held against the stop I I by conventional holding and locking means (not shown). The hinges for the sash I2 are on the edge thereof opposite from the edge shown in Figures 1 and 2.

A screen frame structure I4 is adapted to engage the inner edge of the stop II and is provided with a screen panel I3. The screen frame I is provided with a rabbeted lower edge portion I5 which is engageable with a rabbeted rail I6 secured between the Vertical sides of the window frame structure I0.

In order to provide a means whereby the window sash I2 may be releasably locked in the frame structure I0 and against the stop II in such a manner so as to tightly hold the inner face of the sash I2 against the stop I I, I have provided a locking structure which is secured to the stop II between the sash I2 and the screen frame i4. Thelocking structure for locking the sash against the stop II comprises a substantially rectangular housingI'I which is provided with an open upper side and is also provided with an end flange I8 through which fastening devices I9 engage so as `to tightly secure the housing I1 against the stop I I. .The housing I'I comprises a lower wall 20, end walls 2I and 22 and side walls 23 and 24. The side wall 23 is the outer side wall and is provided with an opening 25 through which a looped keeper 26 is adapted to engage. The keeper 26 extends inwardly at right angles to the inner face of the sash l2 and is formed integral with a base plate 2 secured by fastening devices E8 to the inner side of the upper rail of the sash I2.

A frame structure generally designated as 28 is mounted within the housing I1 and comprises a base member having a right angle extension 3! and a guide bar 32 extending in parallel relation to the lower wall 28 of the housing l1. The base member 38 is fixedly secured to the lower wall 2t by fastening devices 33 in the form of rivets or the like. rEhe guide member 32 extends in the direction of the wall El and s provided with a right angle extension 34 confronting the inner face of the wall 2i. The extension 34 is secured to the wall 2l by fastening devices 35 in the form of rivets or the like.

The fastener includes a horizontally disposed latching or locking structure slidably mounted on the frame structure 29 for correlation with the keeper 26 to releasably fasten, latch or lock the sashes together. The said latching or locking structure is substantially of U-form open at its forward end and closed at its rear end and it is bodily movable endwise and bodily movable laterally simultaneously with its endwise movement. The latching or locking structure includes a locking shank or lower arm 36 which is slidable on the guide member 32 and is constructed in the form of an elongated flat bar which is provided with an inclined forward end 31 which is inclined outwardly from the inneredge of the shank 36 as shown in Figure 4.V The shank 36 is slidably mounted on the guide bar 32 by means of a bolt or headed pin 38 which engages through a cam track generally designated as 39. The headed pin 38 is provided in the form of a short bolt and a nut 40 is threaded onto the bolt 38. The earn track has a straight rear portion Ii and an obtusely inclined forward portion 42. By providing a cam track as shown in Figure 4, when the shank 36 is moved endwise on the guide member 32, the shank 36 is also given a lateral or inward movement so as to provide a wedging action relative to the keeper 26.

` The shank 36 merges at its rear end into the lower end of aright angle extension or bight 43 which merges at its upper end into an elongated upper arm 44 disposed in parallel relation to the shank 36. The arm 44 overlies the shank 36 and is provided with a reduced extension 45 having a cam `engaging nose 48, The cam engaging part 46 is adapted to engage a cam member 41 which is secured at the opposite ends thereof to the walls and respectively. The cam member or track 41, inclined inwardly from the opening 25 and the reduced part 45 of the shank shifting member 44 is substantially longer than the shank 36 so that the shank 36 will be shifted laterally to a position substantially parallel with the forward wall 23 when the shank 36 is in an extended or locking position as shown in dotted lines in Figure 4.

The shank 36 is yieldably urged to a retracted position by means of a contracting spring 48 which at one end thereof is secured to a forwardly extending member 49 formed with the extension 34. The forward end of the spring 48 is provided with a loop or eye 50 which engages a headed pin 5I carried by the arm 44 forwardly of the rear end thereof. The rear end of the spring 48 is provided with any eye or loop '52 enlone end of a handle'or operato-r 13.

iinner sidev of the pulley 18. `vided with'-ancarcuateshield or hood 82 which gaging through an aperture 53 provided in the extension 49.

In order to provide a means whereby the shank 36 may be extended to an operative or locking position, I have provided a shaft 54 which is journalled through the side wall 24 of the housing I1. The shaft 54 has xedly secured thereto a bolt operating lever 55 and the lever 55 is provided with a headed pin 56 adjacent the free end thereof. A shank extending spring 51 is provided at one end with a loop 58 engaging in an opening 59 provided in an extension 68 which is formed with the rear portion of the arm 44. The extension 60 extends` laterally or inwardly of the arm 44. The spring 51 is provided with a straight portion 6l which has a loop 62 engaging about the pin 56. The loop 62 is formed by twisting the wire 6I in the manner such that the loop 62 cannot readily become loosened. In the same manner the loop 58 is formed by twisting the wire at the inner end of the spring 51 and threading the free end of the wire through one of the convolutions of the spring 51.

The operating shaft 54 has a collar 63 secured thereto by means of a pin 64 and the shaft 54 is preferably provided with a number of peripheral grooves 65 with a hole 66 adjacent each groove 65. In this manner the shaft 54 can be initially constructed substantially long so that when the housing I1 is secured to the stop I I, the shaft 54 can lbe cut off for the desired length so that it will extend into an opening 61 provided in the screen frame I4. A sleeve 68 is removably mounted on the shaft 54, the sleeve 68 engaging loosely in the opening 61 provided in the screen frame I4. The sleeve 68 is provided with a pair of diametrically opposed longitudinal slots 69 Within which a pin 10 engaging through a selected 'opening 66 of the shaft 54 engages. In this manner the pin 18 will hold the sleeve 68 against rotation relative to the shaft 54 but will permit endwise movement of the sleeve 68 relative to the shaft 54 when it is desired to remove the screen frame I4 from the window frame structure I0.

The sleeve 68 is provided with a reduced portion 1I which is fixed by means of a pin 12 in [in escutcheonplate E4 is provided with an opening 'i5 within which the reduced portion 'ii of the shaft or sleeve 68 is loosely received so that the sleeve 68 may have rotation relative to the escutcheon 14 when this plate is secured kby fastening devices 16 to the frame I4.

In Figures 6 and "I, there is disclosed a modified form of operator for the shaft 54. In this modified form a sleeve 68a is provided similar to the sleeve 68 which has a slot 89a to receive the pin 18. The sleeve 68a is provided with a reduced 'portion 11 which extends through an axial opening provided in a pulley 18. The pulley 18 is fixed to the reduced part 11 by means of a key or pin'19. A vplate or escutcheon 80 is provided with an opening 8| through which the reduced part 11`engages and the plate 80 is mounted betweenathe'outer end of the sleeve and the The plate is proengages about the pulley 18 so as to prevent a flexible operator 83 from ridingoff of the pulley 18. The operator 83 is constructed in the form of a cord which is xed intermediate its ends, as at 84 to the pulley 18. The operator 83 is provided'with a ring 85 at one end and with a ring 86 at the other'end. These rings-85 and 86 are adapted to -depend downwardly of the inner sidel of the screen frame structure I4. The pulley 'I8 is provided with an opening 8I through which a.

tool is adapted to be extended so that fastening devices 88 in the form of screws may be extended through the plate 80 in order to fasten this plate on the inner side of the screen sash or frame.

In the use and operation of this device, the housing il is secured to the underside of the stop member I I between the easement sash, I2 and the screen frame or sash I4. The screen frame I4 is provided with an opening 6l through which the sleeve 68 loosely engages. The screen frame I4 in the present instance is removably held in the window frame structure I 8 by means of a plurality of spring pressed headed members 89 engaging in sockets 98 which are countersunk `in the frame I 4. The frame I is provided with keepers SI confronting the headed members 89. W'hen it is desired to extend the shank 36, the operator handle 'I3 is swung one half turn to the left so as to rotate the shaft 54. This rotation of the shaft 54 will swing the spring tensioning lever 55 in a downward movement. The lever 55 will be swung downwardly to the left until the forward end of the spring l is disposed above the axial center of the shaft 54. In this position the spring 5'! will be of a greater tension than the spring 48 so that the shank 36 will be moved forwardly with the slide pin 38 engaging in the cam track 35. Endwise movement of the shank 36 to an extended position will initially move the shank 56 along the straight cam track portion 4I and when the slide pin 38 engages the obtusely inclined slot or a cam track 42, the shank 38 will be forced inwardly of the forward wall 23 of the housing. At this time also the shank shifting arm 44 will engage at its forward end the cam member 4l so that the shank 36 will be prevented from pivoting on the slide member 38. Inward movement of the shank 36 as it is moving transversely through the keeper 26 will pull the keeper 26 inwardly and pull the easement sash I2 against the outer face. of the stop II. In this manner if the sash I2 is slightly warped, the locking of the keeper 26 by the shank 36 will hold the sash I2 tightly against the stop II notwithstanding the warped condition of the sash I2.

In the event it is desired to remove the screen I4 from the window frame this may be accomplished by tilting the frame I4 from its upper edge and then pulling the frame I4 upwardly and inwardly so as to release the rabbeted portion I5 from the rabbeted portion I6. The sleeve 68 is rotatably carried by the screen frame I4 and by providing the slot 69 in the sleeve 68, the screen I4 can be removed from the frame I0 without disturbing the housing member I'I as the pin 'Ill will slide out of the slot 69.

Furthermore, by providing the slotted sleeve 68 the easement sash may be opened in the conventional manner when the shank 36 is retracted. It will thus be seen that this locking structure does not interfere with the opening or closing of the sash I2 with the screen I4 within the frame In Figures 9 and 10 there is disclosed a casement window structure embodying a pair of hinged sashes I2a and I2b which are hinged to the frame II)a on their outer vertical edges as at 88 and 9B, respectively. A housing I'I is disposed between the screen member I4a and the Casement sash [2a and is constructed and operated in the same manner as the housing shown in Figures 2 to 5. The sash I2a is provided with a rabbeted inner vertical edge 9| which overlaps the inner rabbeted vertical edge 92 so that when the operator 'I3 is actuated to lock the sash I 2a both sashes I2*L and I2b will be tightly held in the frame lila. 'I'he screen frame I4a is made in one piece and is provided with hooks 93 on its opposite vertical edges to facilitate the removal thereof,

While the operator I3 has been shown with the structure in Figures 9 and 10, it will be obvious that the pulley operator shown in Figures 6 and 7 may optionally be employed in place of the handle 'I3 in either Figures 9 and 10 or in the structure shown in Figures l to 5.

In Figure 8 there is shown a shaft 54 similar in every detail to the shaft shown in Figure 2, except that the shaft shown in this ligure is consderably longer so that when the housing II is mounted in the window frame structure this shaft may be cut off at any groove or weakened part 65 in order that the shaft 54 will not .extend entirely through the screen frame. The pin 'I8 may be inserted in the outermost hole 56 after the shaft 54 has been cut to the desired length.

As shown in Figure 2, the sleeve 68 may have an annular shoulder 'II a engaging through the opening 'I5 of the escutcheon 'I4 so that the sleeve 68 will be rotatable in the escutcheon 'I4 when this latter part is fixed to the screen frame I4. In like manner the sleeve 68a may have an annular shoulder or bearing 'I'Ia engaging in the opening 8l of the plate 80.

What I claim is:

l. A closure fastener comprising a housing, a frame in said housing, a locking shank slidable relative to the frame, a part fixed to the shank and slidable therewith, said frame having a cam track therein, a part iixed to said shank engaging in said cam track, a cam member fixed to said housing forwardly of the frame and engageable with said first part on the forward endwise movement of the shank and coacting with said cam l track to shift said shank and first part laterally coactive with on the forward endwise movement of said shank and first part, and operating means connected to said first part and shifting said shank and first .part in unison.

2. A closure lfastener comprising a housing, a frame in said housing, a locking shank slidable relative to the frame, a part fixed to the shank and slidable therewith, said frame having a cam track therein, a part fixed to said shank engaging in said cam track, a cam member fixed to said housing forwardly of the frame and engageable with said first partI on the forward endwise movement of the shank and coacting with said cam track to shift said shank laterally coactive with endwise movement of said shank and iirst part, yieldable means constantly urging said shank to a retracted position, a rockable shank extending lever, and tensionable means connecting said lever with said shank.

3. A closure fastener comprising a housing, a frame in said housing, a locking shank slidable relative lto the fra-me, a part fixed to the shank and slidable therewith, said frame having a cam track therein, a part iixed to said shank engaging in said cam track, a cam member fixed to said housing and engageable with said first part and coacting with said cam track to shift said shank laterally coactive with endwise movement thereof, yieldable means constantly urging said shank to a retracted position, a rockable shank extending lever, tensionable means connecting said lever with said shank, an operating shaft xed to said lever, a pin fixed to said shaft and projecting laterally thereof, a slotted sleeve removably telescoping said shaft, and an operator fixed to said sleeve.

4. A closure fastener comprising a housing, a frame in said housing, a locking shank slidable relative to the frame, a part fixed to the shank and slidable therewith, said frame having a cam track therein, a part fixed to said shank engaging in said cam track, a cam member xed to said housing and engageable with said first part and coacting with said cam track to shift said shank laterally coactive with endwise movement thereof, yieldable means constantly urging said shank to a retracted position, a rockable shank extending lever, tensionable means connecting said lever with said shank, an operating shaft fixed to said lever, a pin fixed to said shaft and projecting laterally thereof, a slotted sleeve removably telescoping said shaft, and a right angularly disposed handle fixed to said sleeve.

5. A closure fastener comprising a housing, a frame in said housing, a locking shank slidable relative to the frame, a part fixed to the shank and slidable therewith, said frame having a cam track therein, a part xed to said shank engaging in said cam track, a cam member fixed to said housing and engageable with said irst part and coacting with said cam track to shift said shank laterally coactive with endwise movement thereof, yieldable means constantly urging said shank to a retracted position, a rockable shank extending lever, tensionable means connecting said lever with said shank, an operating shaft fixed to said lever, a pin fixed to said shaft and projecting laterally thereof, a slotted sleeve removably telescoping said shaft, a pulley fixed to said sleeve, a flexible operator fixed intermediate its ends to and depending from opposite sides of said pulley, an arcuate shield engaging over a portion of said pulley, an upstanding plate encompassing said second shaft, interposed between the pulley and said sleeve and supporting said shield, and means for detachably securing f said plate stationary.

6. A closure fastener for use with a looped keeper comprising a housing, a frame in said housing including a base and an offset shank guide member, said member having a cam track therein provided with a rear portion parallel with an edge of said member and a forward portion disposed on an obtuse angle relative to said rear portion, a locking shank slidable on said member, means carried by said shank engaging in said cam track, a shank shifting arm fixed to said shank and disposed in parallel relation thereto, the forward end of said arm projecting forwardly beyond the forward end of said shank, a cam member fixed to said housing and disposed in a position for engagement with said arm upon movement of said shank to an extended locking position, a bolt retracting spring connected at one end to said frame and at the other end to said arm, an operating shaft journalled in said housing, a lever fixed to said shaft in said housing, a headed pin carried by said lever, a shank extending spring iixed at one end to said headed pin and at the other end to said arm adjacent the rear thereof, a laterally projecting pin carried by said shaft, a slotted sleeve removably engaging said shaft, said latter pin engaging in the slot of said sleeve, an operator fixed to said sleeve, said shank extending spring being disposed at one side of the axial center of said shaft when said shank is in retracted position, and said `spring being disposed at the opposite side of the axial center of said shaft when said bolt is in extended position.

7. A closure fastener for correlation with a keeper to latch the latter, said fastener comprising a housing into which the keeper is adapted to extend, a frame within the housing formed with a cam track, 4cam means Within the housing and spaced from said frame, an endwise bodily shiftable latching structure slidably mounted on said frame and including a part coacting with said track for slidably lconnecting the latching structure to said frame and for shifting the latching structure laterall;r on the endwise movement of said structure, said structure including an upper arm engageable with said cam means for shifting the structure laterally on the forward endwise movement of the latter, said structure including a lower arm for disposing in latching engagement with the keeper on the shifting of said structure endwise in a forward direction, resilient means connecting the upper arm of said structure to said frame, and shifting means for said structure resiliently connected to said upper 1 arm.

8. A closure fastener for correlation with a keeper to latch the latter, said fastener comprising a housing into which the keeper is adapted to extend, a frame within the housing formed with a cam track, cam means within the housing and spaced from said frame, an endwise bodily shiftable latching structure slidably mounted on said frame and including a part coacting with said track for slidably connecting the latching structure to said frame and for shifting the latching structure laterally on the endwise movement of said structure, said structure including an upper arm engageable with said cam means for shifting the structure laterally on the forward endwise movement of the latter, said structure including a lower arm for disposing in latching engagement with the keeper on the sluiting of said structure endwise in a forward direction, resilient means connecting the upper arm of said structure to said frame, a lever movable in an arcuate path, a resilient connection between said lever and the upper arm of said structure for bodily moving the latter endwise in one direction of the movement of the lever, and rotatable means for operating the lever to provide for the forward endwise shifting of said structure.

WILLIAM B. LANG. 

